Naoki Nakagawa defeated Hikaru Shiraishi 6-7 7-6 6-1 in the M25 Sapporo 1 quarter-final on hard. Naoki Nakagawa extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-09-11 | M25 Sapporo 2 | R16 | hard | Naoki Nakagawa | 6-3 6-1 |
| 2023-09-22 | M25 Takasaki 1 | QF | hard | Naoki Nakagawa | 1-6 6-0 7-5 |
Averages over each player's completed matches in the selected window (55 vs 38). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About